php script to monitor OTRS queue size from SNMP

February 18th, 2014 Posted in Linux, MySQL, PHP & PW

最近公司上线OTRS，感觉还不错，顾问居然还给了数据库的结构图，闲下来就写了这个php脚本给Opsview用来监控OTRS支持队列的大小。别问我为什么用php…因为我实在是不会pel….

测试环境：

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04.4 LTS"

废话不说，先帖脚本：

#!/usr/bin/php
<?php

# Tomas Tang on 18/02/2014
# Check the OTRS support queue size

# Disable error report
error_reporting(0);

# get arguments
$procname = $argv[0];
$queuename = $argv[1];
$warnlevel = $argv[2];
$critilevel = $argv[3];

# keep it for future develop
#$QUEUE = array(
#               "allnew",
#               "escalated",
#               "second_level_support",
#               "first_level_support",
#);


# set query SQL and help
if("$queuename"=='allnew'){
        # all the tickets with state new but not in delete queue
        $sql = "select count(1) from ticket where ticket_state_id=1 and queue_id!=3;";
}elseif("$queuename"=='escalated'){
        # not in use yet, to be finished
        $sql = "select count(1) from ticket where ticket_state_id=1 and queue_id!=3;";
}elseif("$queuename"=='first_level_support'){
        # all tickets which are not (pending to) closed
        $sql = "select count(1) from ticket where ticket_state_id in (1,4,6,11) and queue_id=5;";
}elseif("$queuename"=='second_level_support'){
        # all tickets which are not (pending to) closed
        $sql = "select count(1) from ticket where ticket_state_id in (1,4,6,11) and queue_id=6;";
}else{
        echo "Usage: $procname  <QueueName>  <WarnNumber>  <CriticalNumber>\n";
        echo "      QueueName:      Queueu name to query, right now only in \"allnew\",\"escalated\",\"first_level_support\" and \"second_level_support\"\n";
        echo "      WarnNumber:     Tickets quantity start to be warn, required\n";
        echo "      CriticalNumber: Tickets quantity start to be critical, must greater than WarnNumber, required\n";
        exit(3);
}

# Double check query SQL
if(empty($sql)){
        echo "UNKNOWN - Unknown error\n";
        exit(3);
}

# Check arguments again.
if(!is_numeric("$warnlevel")||!is_numeric("$critilevel")){
        echo "UNKNOWN - Incorrect arguments.\n";
        exit(3);
}elseif($warnlevel>=$critilevel){
        echo "UNKNOWN - Incorrect warn/critical level.\n";
        exit(3);
}

# connect to database
$conn = @mysql_connect("localhost","readonly","readonly") or die("Cannot connect to DB");
mysql_select_db("otrs",$conn);

# fetch data
$result = mysql_query("$sql",$conn) or die("Query failed");
$result = mysql_result($result,0);

# close db
mysql_close($conn);

if ($result>=$critilevel){
        echo "CRITICAL - Queue size is $result, queue is huge!!!\n";
        exit(2);
}elseif($result>=$warnlevel){
        echo "WARN - Queue size is $result, queue is big!\n";
        exit(1);
}else{
        echo "OK - Queue size is $result, queue is OK.\n";
        exit(0);
}

?>

脚本本身没什么好看的，不过最开始用来传参的东西还是蛮好玩的，这种脚本不能跟在web里面一直的传参，只能通过这个叫$argv的数组。

把脚本保存为/usr/local/bin/check_otrs_queue

修改/etc/snmp/snmpd.conf，加上下面几行

exec otrs_new_tickets /usr/local/bin/check_otrs_queue allnew 15 20
exec first_level_support /usr/local/bin/check_otrs_queue first_level_support 30 50
exec second_level_support /usr/local/bin/check_otrs_queue second_level_support 10 15

最后就是使用check_snmp_exec.sh检测了~~~